Earthworks M30BX Manual

Earthworks Mikrofon M30BX

Læs gratis den danske manual til Earthworks M30BX (2 sider) i kategorien Mikrofon. Denne vejledning er vurderet som hjælpsom af 18 personer og har en gennemsnitlig bedømmelse på 4.8 stjerner ud af 9.5 anmeldelser. Har du et spørgsmål om Earthworks M30BX, eller vil du spørge andre brugere om produktet?

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Side 1/2

User’s Guide

MADE IN USA

Printed in USA

earthworksaudio.com

July 11, 2018

Electronic Calibration Files

within 30 days of purchase on our website at

earthworksaudio.com/register.

Once your Measurement Microphone has been

registered in our database, we will send you

your ECF to the valid email address provided in

your registration.

Warranty

All Earthworks microphones carry a limited

warranty (parts and labor).

Product Registration

To help you get the most out of your

Earthworks purchase, please take a moment

and register your product with us online at

earthworksaudio.com/register.

Service & Repair

If you have any problems with your Earthworks

products, please contact our Service & Repair

Department.

Email: returns@earthworksaudio.com

Telephone: (603) 654-2433, ext. 119

Pin 1

“Shield”

Pin 2

“+”

Pin 3

“ ”-

Frequency Response of M30BX (typical)

Description

The Earthworks M30BX is an omnidirectional (pressure)

microphone designed and calibrated for measurement

purposes. It is a pre-polarized condenser microphone

directly coupled to a wideband, low output impedance

preamplier. The M30BX requires a single type P28L

(Lithium) or equivalent 6V battery as a power source. It

features a linear free-eld frequency response from 9 Hz

to 30kHz (please see the enclosed individual calibration

chart). It has low handling noise and a uniform polar pat-

tern. Its unique circuitry excludes the transconductance

of the input FET from the overall gain structure. The sen-

sitivity remains very stable when the microphone is sub-

jected to variations in ambient temperature. The M30BX

meets or exceeds ANSI Type 1 requirements.

Each microphone is delivered with its own calibration

chart providing its individually measured open-circuit

sensitivity and the frequency response curve. A computer

le containing the frequency response data for import-

ing directly into measurement software is available from

Earthworks, Inc. upon registering your new microphone. A

mounting clip, a calibrator adapter, an XLR to RCA adapt-

er, and a battery are included with the microphone.

Applications

The Earthworks M30BX is ideally suited for on-location

acoustic measurements including loudspeaker design

and quality control, sound system setup and trouble-

shooting, room acoustics, or any application where an

accurate free-eld measurement microphone is required

and portability is important or a power source is not read-

ily available. Many test systems manufacturers, such as

DRA Labs (MLSSA™), Smaart™ and DEQX™, recommend

M30BX microphones. The wide linear minimum-phase

response and fast, well-damped impulse response make

M30BX an excellent microphone for loudspeaker design,

especially for time domain measurements.

The M30BX is simple to operate. Make sure the battery

(included) is properly installed in the microphone. To open

the battery compartment hold the microphone by the up-

per body and unscrew the battery cover sleeve (this cover

is not removable). The battery is only switched on when

an XLR connector is plugged into the microphone. The

M30BX will not operate from phantom power.

The M30BX will drive either balanced or unbalanced in-

puts. An XLR to RCA adapter is enclosed for driving un-

balanced inputs of sound cards directly. Please note that

the best S/N ratio is achieved using a balanced interface.

Calibration

The microphone is calibrated at the factory at 1 kHz (in-

dependent of any frequency weighting). The sensitivity in

mV/Pa is provided on the enclosed calibration chart. If

on-site calibration is required, use the enclosed one-half

inch standard calibration adapter.

NOTE: Earthworks recommends re-calibration every

ve (5) years.

XLR Output Connector Assignment of M30BX

Specications

Frequency response: 9Hz to 30kHz +1/-3dB

Polar Pattern: Omnidirectional

Sensitivity: 3mV/Pa (Typical)

Power Requirements: 6V Battery Type P28

(2CR-1/N, 4LR44 or eq.)

Peak Acoustic Input: 140dB SPL

Output: XLR-3

Minimum Load: 600Ω between pins 2 & 3

Noise: 20dB, A equivalent

Dimensions L x D: 220 x 23 mm (8.65 x .910 in.)

Weight: 180g (.4lb)

Impulse Response of M30BX (typical)

Polar Response of M30BX (typical)

Specications are subject to change without notice.

M30BX Open Battery Compartment

Produkt Specifikationer

Mærke:	Earthworks
Kategori:	Mikrofon
Model:	M30BX

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